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Green Walls Go Supersize

Green Walls Go Supersize

Just a few weeks ago, Longwood Gardens in Pennsylvania debuted North America's largest green wall. Just how large is this record-breaking wall? 4,072 sq feet. That's just a bit smaller than the size of two tennis courts, and that's 70% larger than the former record holder, the PNC Building's green wall, unveiled last year. A few factoids about the Longwood green wall:

The wall is made up of 47,000 plants

It’s punctuated by doorways to 17 new bathrooms

It provides as much oxygen as 90 moderate height trees

It contains a 3,800 foot vertical drip irrigation system

A computerized monitoring system tracks water usage 24/7

The wall contains no actual soil. Instead the 3,595 panels are filled with a long-lasting, light-weight growth medium